4042433021 has 8 divisors (see below), whose sum is σ = 4428228288. Its totient is φ = 3659688000.

The previous prime is 4042432993. The next prime is 4042433023. The reversal of 4042433021 is 1203342404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4042433021 - 2⁶ = 4042432957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042433023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759785 + ... + 765086.

It is an arithmetic number, because the mean of its divisors is an integer number (553528536).

Almost surely, 2^4042433021 is an apocalyptic number.

It is an amenable number.

4042433021 is a deficient number, since it is larger than the sum of its proper divisors (385795267).

4042433021 is a wasteful number, since it uses less digits than its factorization.

4042433021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525123.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 4042433021 is about 63580.1307092082. The cubic root of 4042433021 is about 1592.9945046059.

Adding to 4042433021 its reverse (1203342404), we get a palindrome (5245775425).

The spelling of 4042433021 in words is "four billion, forty-two million, four hundred thirty-three thousand, twenty-one".